Slide rule in leather case -- Keuffel & Esser Co #4081-3, 1940s
$8.99 USDSold on: 2013-Dec-27
Marketplace: eBay
Detail:
Classic Keuffel & Esser Log Duplex DeciTrig slide rule. The latest patent dates from 1940, and Mr. Lundin was already a graduate student in Chicago by 1950, so the timeline for dating this is pret... | Item Name | | Sold Price |
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